background image

HOW TO INSTALL THE AQUA-REX WK1P

This product is intended for use on plastic pipe up to 2½” 

diameter on re-circulating systems for swimming pools. It 

may also be used to treat domestic water supplies on pipe 

diameter up to 1” where it is exposed to wet or damp 

conditions. It 

MUST NOT

 be used on pipe sizes of more 

than one inch diameter except on re-circulating systems such 

as pools.
The WK1P is fully waterproof so it can be left outside 

exposed to rain and weather.
The antennas and power supply are directly wired into the 

control box and cannot be removed from the unit. The circuit 

board is fully encapsulated in epoxy resin.
There is a plastic sheath that can be heat shrunk onto the 

power supply connection.

The power supply transformer is only rated for 

internal use and must not be allowed to get wet. 

It must be protected in the same way as a normal 

home internal plug.

GENERAL

If this unit is to be used on domestic water services 

to protect an externally mounted water heater 

then refer to the instructions for the Aqua-Rex 

WK1 which can be downloaded from the Technical 

Library on our website www.aqua-rex.com.

The Aqua-Rex WK1P will substantially reduce the amount 

of Calcium scale deposits that occur around the waterline 

of pools. By removing the scale from the tiles or liner, any 

staining that is retained by the scale will also disappear.

SILICA SCALE 

Calcium scale and Silica scale look very similar and are 

often confused with each other. The easiest way to tell them 

apart is to test them with an acid such as vinegar or muriatic.

Calcium scale will bubble and will disappear. Silica won’t 

react at all.

Aqua-Rex will NOT remove Silica scale. The scale around 

the grout lines of tiles generally comes from behind the tile 

and is mostly Silica. Aqua-Rex will not be effective on this 

kind of scale either. High levels of Silica are only found in a 

few ground water supplies and Silica scale along the water 

line is not a common problem in most areas of the USA.

Aqua-Rex will reduce scale in a filter so the sand is free to 

act more effectively and may require less backwashing. It 

will help chlorine or other biocides to be more effective so 

that the amount used can be reduced for the same effect. 

PHOSPHATES 

Aqua-Rex has shown to be effective at causing phosphates 

to flocculate and fall out of solution into the bottom of the 

pool. The water will be clearer and any algae will have less 

food so is less likely to cause a problem.

It may also help reduce dissolved solids by encouraging 

them to precipitate into suspended solids which can then be 

removed by the filter. 

SALT GENERATOR

It will also help to keep the salt generator plates 

clean.

LOCATION

The unit should be installed downstream of the circulation 

pump on a pipe that is always full of water. If there is more 

than one pump serving a separate pool or water feature 

then each pumped line needs to be treated downstream 

of the pump. It will operate on any type of pipe material, 

including corrugated and plastic up to 2½” diameter.

It is a very simple installation but there are three basic points 

that it is 

ESSENTIAL

 you follow.

1.  The wires must be tight on the pipe and secured at both 

ends by the plastic zip ties. Check from time to time that 

they stay tight and don’t work loose with the vibration of 

the pump. 

2.  Keep the box close to the pipe so there is the maximum 

number of windings possible on the pipe. It is best to 

secure the box to the pipe or just let it hang from the 

aerials. 

3.  Install it on the discharge side of the pump. The picture 

shows it installed on a vertical pipe but it can also be 

installed on a horizontal pipe.

Reviews: